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<?php
namespace ganglio;
class Memoizer
{
const NOT_CALLABLE = 1;
private $f = null;
private $results = null;
public function __construct($f)
if (!is_callable($f)) {
throw new \InvalidArgumentException("Argument needs to be callable", self::NOT_CALLABLE);
}
$this->f = new \ReflectionFunction($f);
public function __invoke()
$args = func_get_args();
$args_hash = spl_object_hash((object)$args);
if (!isset($this->results[$args_hash])) {
$this->results[$args_hash] = $this->f->invokeArgs($args);
return $this->results[$args_hash];
ganglio /
Memoizer
